running w2k_sp4 with PG 2.0 and symantec corp edition 8.1 av. w2k is normally rock solid, I install PG and w2k intermittently and unpredictably black_screen crash/reboots. nothing recorded in the PG log of these black events. I installed PG for 3d time the other day, and w2k ran normally smooth and steady for about 35 hours thinking the 3d time is the charm, and when I attempted to open MS Excel, immediate black screen crash/reboot. no obvious problem or pattern to this, so either ming_the_merciless is really in control of my box via some deeply hidden malcode, or I'm thinking that sometimes sav_realtime conflicts unpredictably with PG. Gavin mention in private that DCS had not tested PG with sav, and I'm sure it's not practicable to test with everything. I've currently disabled sav_realtime and not using that box on the internet. so then assuming that the conflict is with sav, I am willing to uninstall it and try some other av, but I need to know what av DCS thinks runs in total harmony with PG, TDS3. and I'll try WG too once things smooth out with PG.